Sea-water storage-tank



(No Mael.)

J PARNHAM SEA WATER STORAGE TANK.

Patented Dec. 30,1890,

Figi

WITHESE E5.

UNITED STATES PATENT OFFICE.

.IOIINIARNIL/XM, OF SAN FRANCISCO, CALIFORNIA.

SEA-WATER STO RAG E-TAN K.

SPECIFICATION forming part of Letters Patent No. 443,827, dated December 30, 1890. Application iiled June 13,1890. Serial No. 355,354. (No model.)

To all whom it may concern.-

Be it known that I, J oHN FARNHAM, a citizen of the United States, residing in the city and county of San Francisco, and State of California, have invented certain neT and useful Improvements in Sea-Tater Storage- Tanks for Bath-Houses, of which the following is a specification.

My invention relates to tanks for holding sea-water in bath-houses and like situations where the salt Water is stored for use; and it has for its obj ect to produce a'n improved tank having several advantages, principally in point of durability and cheapness, over the ordinary storage-tank heretofore employed, but especially valuable by reason of its teredoproof qualities.'

Vooden tanks used for storage purposes in sea-Water bathing establishments are subject in many localities to the attacks of the teredo or ship-Worm, and are soon rendered useless by the destructive Work of these animals on the inner sides of the tank, Which are honeycombed often to such an extent that the tank is rendered useless after a short timeof service. In most cases the destruction of the Wood is so complete that the tanks require to be replaced by new ones after a comparatively short time of service.

My present invention, having for its object to provide a storage-tank which shall be free from the aforesaid defects and objections common to the ordinary storage-tank, consists of the described construction and combination of the outer sides or body of Wood and inner sides or body of cement, substantially as hereinafter described, and pointed out in the claim.

The accompanying drawings, forming a part of this specification, illustrate the manner in WhichI have constructed and produced .my improved tank.

Figure lis an elevation of the tank with a portion broken awayto show the construction more clearly, and Fig. 2 represents a transverse section through a portion of the bottom and sides of the tank on an enlarged scale.

The outer wall or body of the tank is built of Wooden staves A A, suitably jointed and bound together by hoops A in the ordinary Way, to produce a cylindrical structure, With more or less taper, of the shape most generally employed. On the inside of this structure and against the inner surface of the staves are ixed wooden strips B B in close order with narrow intervals of space between them and in regular roWs, covering the entire surface both around the sides and upon the bottom. These strips are secured in place by nails or by other suitable means, and are laid either perpendicularly or horizontally on the upright sides, as may be most convenient. Upon the bottom they are llaid across in even rows. Over the surface thus formed a body of cement C is laid in plastic condition and of suitable composition to form when set a smooth Water-proof body and surface over the entire sides and bottom of the structure. Hydraulic cement-such as Portland cementis used by me to form this inner body, and

when applied it is Worked into the spaces or recesses or interstices of the surface, and also laid on of suitable thickness to cover the Wood entirely. The thickness of the cement should be about three-eighths of an inch at least over the strips, and the surface should be finished smooth and even. An outlet D for the Water is provided at the bottom of the tank With suitable couplings for the pipe, through which the Water is drawn from the tank. The coupling is set through the Wooden body and the cement is laid smoothly and closely around its inner end. It should be mentioned that the inner body formed by the Wooden strips and the cement contributes to the strength of the structure to such an extent that the outer Wooden body may be reduced in thickness and a much lighter and inferior quality of staves can be employed for the outer Wooden body. As thus constructed myimproved tank Will be found impervious to the attacks of the teredo and will therefore last for an'indenite length of time. Its surfaces, also, will remain clean and free from slime and other matter that usually collect on the inner sides of the ordinary tank, and consequently it will preserve the Water in good Condit-i011 Without adapted to form a surface impervious to waro fouling or affecting its natural quality. tei' and to the attacks of the ship-wo1m.

Having thus 'fully described my invention, In testimony that I claim the foregoingr I what I claim, and desire to secure by Letters have hereunto set my hand and seal.

5 Patent, is- I 1y y V f The herein-described tank forholdin sew JOHN I ARIIAM" [L' 5'] water, Composed of am outer wooden body, an \Vit1iesses: l inner body of spaced strips, and a body of CHAS. E. KELLY, Cement Covering the Said .inner body and EDWARD E. OSBORN. 

